1. (verb)curse, cuss, blaspheme, swear, imprecate utter obscenities or profanities "The drunken men were cursing loudly in the street"
2. (verb)affirm, verify, assert, avow, aver, swan, swear to declare or affirm solemnly and formally as true "Before God I swear I am innocent"
3. (verb)swear promise solemnly; take an oath
4. (verb)swear, depose, depone make a deposition; declare under oath
5. (verb)trust, swear, rely, bank have confidence or faith in "We can trust in God"; "Rely on your friends"; "bank on your good education"; "I swear by my grandmother's recipes"
Definitions of 'swear'
Webster 1913 Dictionary
1. (verb)swear to affirm or utter a solemn declaration, with an appeal to God for the truth of what is affirmed; to make a promise, threat, or resolve on oath; also, to affirm solemnly by some sacred object, or one regarded as sacred, as the Bible, the Koran, etc
2. (verb)swear to give evidence on oath; as, to swear to the truth of a statement; he swore against the prisoner
3. (verb)swear to make an appeal to God in an irreverant manner; to use the name of God or sacred things profanely; to call upon God in imprecation; to curse
4. (verb)swear to utter or affirm with a solemn appeal to God for the truth of the declaration; to make (a promise, threat, or resolve) under oath
5. (verb)swear to put to an oath; to cause to take an oath; to administer an oath to; -- ofetn followed by in or into; as, to swear witnesses; to swear a jury; to swear in an officer; he was sworn into office
6. (verb)swear to declare or charge upon oath; as, he swore treason against his friend
Definition of swear 
